Electro-optical measurement of the velocity and concentration of motile microorganisms.
D000818:Animals; D008828:Microbiological Techniques; D008853:Microscopy / Q000379:methods*; D008872:Microwaves; D008954:Models, Biological; D009068:Movement; D013696:Temperature; D013769:Tetrahymena pyriformis / Q000502:physiology / Q000528:radiation effects